Owner's manual

Mixer Linking

Linking the 664 With Another 664 or 552 Mixer

The Link I/O function allows the 664 or 552 to be interconnected with another 664 or 552 mixer for

applications requiring more inputs. When the 664 is linked with a 664 or 552, all inputs appear at

both mixer’s outputs. The stereo mix from the other mixer will be routed to the 664’s stereo Master

Bus and recorded on tracks L and R. Return audio and PFL occur on the headphone output of both

mixers. The Link I/O connector is an unbalanced TA5M wired pin-1 = HP L, pin-2 = HP R, pin-3 =

Mix R, pin-4 = Mix L, pin-5 = link detection/ground.

To Link the 664 to another 664 or 552 mixer:

1. Connect the Link I/O of the 664 to the Link I/O of the other 664 or 552 mixer using a TA5F

to TA5F cable (Sound Devices XL-TA55 optional accessory). This will send the stereo mix of

each mixer directly to the stereo output bus of both mixers.

664 / 552664

2. Monitor the stereo sum of all input channels from either mixer headphone monitor.

3. Adjust the levels on each mixer accordingly.

Linking to Other Mixers

The Link I/O function allows the 664 to be linked to a Sound Devices 302, 442, or MixPre mixer for

applications requiring higher input channel counts. When the 664 is linked with another Sound

Devices mixer, all input channels will be present on the stereo Master Bus of the 664. Return audio

and PFL only occur on the headphone output of the mixer that it is performed on. The 552 Link I/O

connector is an unbalanced TA5M wired pin-1 = HP L, pin-2 = HP R, pin-3 = Mix R, pin-4 = Mix L,

pin-5 = Link detection/ground.

Linking to a 302 or 442

The Tape Out/Mix Out of a 302 is an unbalanced stereo TA3F connector. The 442 has two Tape Out/

Mix Out connectors, 3.5 mm and TA3. For the most secure connection use the TA3 Tape Out/Mix

Out connector. The TA3 on the 442 and 302 is wired pin-1 = ground, pin-2 = Left, pin-3 = Right. For

details on the 3.5 mm connection see Linking to a MixPre.

Sound Devices XL-TA35 is a 12-inch, TA5F to TA3F accessory cable used to link Sound Devices 302

and 442 mixers to the 664 or 552. For more details see Accessories.

To link a Sound Devices 302 or 442 to a 664:

1. Connect the Link I/O of the 664 to the Tape Out/Mix Out of a 302 or 442 using a Sound

Devices XL-TA35 cable. This sends the stereo mix of both mixers directly to the stereo Master

Bus of the 664.

664302

664442

664 User Guide and Technical Information

Mixer Linking